Surface temperature analysis on the eastern shore of Khuvsgul Lake

• Main Authors: Khurelbaatar, Temuujin, Avirmed, Dashtseren, Westermann, Sebastian, Nyam-Osor, Nandintsetseg, Tserengunsen, Purevdorj
• Format: Article in Journal/Newspaper
• Language: English
• Published: Institute of Geography and Geoecology, Mongolian Academy of Sciences 2022
• Subjects: ermafrost; Mean annual ground surface temperature; Freezing degree days; Thawing degree days; permafrost
• Online Access: https://www.mongoliajol.info/index.php/MJGG/article/view/2527

It is crucial to keep the eastern shore of Khuvsgul Lake, which is differentiated from other parts by its unique characteristics. For this case, it is necessary to study permafrost, which plays a certain role in the component of the uniqueness, of this region. Numerous studies have proven that the current climate change has caused accelerating permafrost loss. Therefore, we initiated a study to understand the permafrost condition on the eastern shore of Khuvsgul Lake. The preliminary findings of the study were presented. Nine locations, which were on the same line but had various natural characteristics, were selected for the study. FDD (freezing degree days) and TDD (thawing degree days) values of the sites as well as changes in the mean annual temperature were analyzed in the study. Between the study sites, the mean annual ground surface temperature ranged from -1.67°C to 1.04°C. For the FDD and TDD values of the studied area, site A-10, which was situated on a south-facing slope, had the higher temperature variations, ranging from -1573.2°C to 1953.1°C, while the study sites in the forest had the lower temperature variations, ranging from -881.3°C to 646.1°C. Also, the differences between the FDD and TDD values were highest and 379.9°C at A-10, whereas, it was lowest and -609.2°C at the valley site A-35, where shrubs were predominated. The temperature variations between winter and summer at the study sites were relatively lower and 17°C in the forested area, whereas relatively higher and 25.5°C in the non-forested area. Хөвсгөл нуурын зүүн эргийн гадаргын температурын анализ ХУРААНГУЙ Хөвсгөл нуурын зүүн эрэг нь өөрийн гэсэн өвөрмөц байгалийн тогтцоороо бусад үзэсгэлэнт газруудаас ялгарсаар ирсэн ба үүнийг зүй зохистой байгалийн унаган төрхөөр нь хадгалж үлдээх нь маш чухал юм. Үүний тулд тэрхүү байгалийн үзэсгэлэнт төрхийг бүрэлдүүлэхэд тодорхой хэмжээний үүрэгтэй оролцдог цэвдгийг тухайн бүс нутагт илүү нарийн судлан шинжлэх шаардлагатай. Сүүлийн жилүүдэд эрчимтэй явагдаж байгаа уур амьсгалын өөрчлөлтийн ...